US Bridges

I-84 (hwy 6) FR RD over Grande Ronde R and UPRR

Good

Union County, Oregon · 0.1 MI N Upper Perry Int · Structure no. 00626 006F25631

Built
1924
101 years old, rebuilt 2009
Condition
Good
inspected May 2024
Type
Arch - Deck
Concrete Continuous
Length
312 ft
1 main span
Daily traffic
9
2022 count
Owner
State
State Highway Agency

About this bridge

I-84 (hwy 6) FR RD over Grande Ronde R and UPRR is a concrete continuous arch - deck carrying I-84 (hwy 6) FR RD over Grande Ronde R and UPRR in Union County, Oregon. It was built in 1924 and reconstructed in 2009, so it is 101 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9 vehicles a day, roughly 44% of them trucks, projected to reach 10 by 2030. The structure is 312 ft (95.1 m) long and 23 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesI-84 (hwy 6) FR RD
CrossesGrande Ronde R and UPRR
Location0.1 MI N Upper Perry Int
RouteState Highway 84
CountyUnion County
StateOregon
Coordinates45.35263, -118.17057
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33.2 US tons
Inventory rating25.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadH 15
Structure length312 ft (95.1 m)
Longest span135 ft (41.1 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9 (2022)
Projected traffic10 by 2030
Trucks44%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed42.9 mi (69 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-84 (hwy 6) FR RD over Grande Ronde R and UPRR built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 2009.

What condition is I-84 (hwy 6) FR RD over Grande Ronde R and UPRR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does I-84 (hwy 6) FR RD over Grande Ronde R and UPRR carry?

About 9 vehicles per day (2022 count), of which roughly 44% are trucks.

How long is I-84 (hwy 6) FR RD over Grande Ronde R and UPRR?

The structure is 312 ft (95.1 m) long with a longest span of 135 ft (41.1 m) and a deck 23 ft wide.

Who owns I-84 (hwy 6) FR RD over Grande Ronde R and UPRR?

It is owned by the State Highway Agency.